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Purificant used for desulfuration of propylene and ethylene light hydrocarbon materials and preparation method thereof

A purification agent and ethylene technology, applied in chemical instruments and methods, organic chemistry, other chemical processes, etc., can solve the problems of small arsenic capacity, large bulk ratio, and small porosity, and achieve high arsenic removal accuracy and large arsenic capacity , the effect of strong desulfurization function

Inactive Publication Date: 2009-12-16
LIAONING PROVINCE PETROLEUM CHEM IND PLANNING&DESIGNING INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These products have the disadvantages of small arsenic capacity, small porosity, low effective utilization rate of active components, high bulk ratio, and high cost of one-time filling.

Method used

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  • Purificant used for desulfuration of propylene and ethylene light hydrocarbon materials and preparation method thereof
  • Purificant used for desulfuration of propylene and ethylene light hydrocarbon materials and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of a purifying agent for dearsenic removal of propylene and ethylene light hydrocarbon materials is:

[0023] Add water to 390-400Kg of copper nitrate to 1000L to make an aqueous solution of copper nitrate for later use;

[0024] Add 500-510kg of zinc nitrate to 1000L with water to make an aqueous solution of zinc nitrate for later use;

[0025] Add water to 900-910Kg aluminum nitrate to 1000L to make aluminum nitrate aqueous solution for later use;

[0026] Sodium carbonate, sodium hydroxide or sodium bicarbonate formulated as Na 2 O content is the aqueous solution of 6-12% standby;

[0027] Add the above-prepared sodium carbonate, sodium hydroxide or sodium bicarbonate solution into the reaction kettle first, and then add the prepared copper nitrate, zinc nitrate and aluminum nitrate solutions into the reaction kettle in parallel to the alkaline solution in the reaction kettle. Co-precipitation reaction in the solution under the heating conditi...

Embodiment 2

[0029] A preparation method of a purifying agent for dearsenic removal of propylene and ethylene light hydrocarbon materials is:

[0030] 394g of copper nitrate, 504g of zinc nitrate, and 896g of aluminum nitrate were prepared into 1000ml aqueous solution respectively, 1000g of sodium carbonate was prepared into 1000ml of solution, the sodium carbonate solution was put into the reactor, heated to 60°C under stirring, copper nitrate, Zinc nitrate and aluminum nitrate solutions flow into the sodium carbonate solution concurrently, the flow rate is 50ml / hr (i.e. the pH value at the contact point is 7.5), coprecipitated for 1.5 hours, then filtered, washed and dried at 100°C for 24 hours, then Roast at 350°C for 4 hours and extrude into strips of ∮1.5X3-5mm to obtain the finished product.

Embodiment 3

[0032] A preparation method of a purifying agent for dearsenic removal of propylene and ethylene light hydrocarbon materials is:

[0033] Copper sulfate and zinc sulfate were formulated into aqueous solutions containing 13% CuO and ZnO, and aluminum nitrate was formulated into Al 2 o 3 For an aqueous solution with a content of 10%, put 1000ml of 1:6 ammonia water into the reactor, heat it to 30°C in a closed stirring state, and add copper nitrate, zinc nitrate and aluminum nitrate solutions into the ammonia solution in parallel to ensure that the liquid flow The pH value at the contact point is 7.5. When the pH value of the entire solution in the kettle is 7.5, the co-precipitation is over, and then filtered and washed, dried at 100°C for 24 hours, and then roasted at 380°C for 4 hours and extruded into ∮1.5 X3-5mm strip, that is, the finished product.

[0034] The experimental example of the effect of removing arsenic of the present invention:

[0035] 1. Do the initial ac...

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Abstract

The invention relates to a purificant used for the desulfuration of propylene and ethylene light hydrocarbon materials. The purificant used for the desulfuration of propylene and ethylene materials takes alumina as a carrier, takes copper oxide as an active component, takes zinc oxide as an auxiliary agent and contains the following components according to the weight percent: 32-35% of CuO, 33-40% of ZnO and the balance of alumina. The purificant used for desulfuration does not need any preprocessing and can be directly used in the production technology of the desulfuration of the propylene and ethylene light hydrocarbon materials with high airspeed and high concentration of hydrogen arsenide. The purificant can be used at normal temperature, normal pressure and airspeed of 1200-2100hr-1, equivalent to the condition of the liquid airspeed of 4.5-8.0hr-1, and has the characteristics of high desulfuration precision and large arsenic capacity. The content of arsenic in raw materials can be removed from 1000ppm to less than 5ppb at normal temperature and normal pressure, the capacity of saturated arsenic reaches more than 30%, and the capacity of industrial effective arsenic is greater than 15%. Moreover, the purificant has a stronger desulfuration function.

Description

technical field [0001] The invention relates to a purifying agent, in particular to a purifying agent for removing arsenic from materials such as propylene and ethylene. Background technique [0002] The arsenic removal agent for light hydrocarbon materials such as propylene and ethylene has a very important application in petrochemical production. In recent years, with the continuous exploitation of crude oil, the content of arsenic in oil has been increasing year by year. Both Daqing oil and Xinjiang oil are high-arsenic crude oils in my country's crude oil, especially the arsenic content of Daqing oil is said to be the highest in the world. Products obtained from the secondary processing of high-arsenic oils, such as polymerization catalysts for propylene and ethylene or other further processing catalysts, often require that the arsenic content should not be too high, otherwise these catalysts will be poisoned and the polymerization reaction will not proceed. [0003] T...

Claims

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Application Information

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IPC IPC(8): C07C7/12C07C11/04C07C11/06B01J20/08B01J20/30
Inventor 孙云张艳飞姚炜孙凤伟吕锡刚
Owner LIAONING PROVINCE PETROLEUM CHEM IND PLANNING&DESIGNING INST
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